Ioan VIDICAN


35-53 PERSPECTIVE INGINEREȘTI IMPRESIONANTE Partea I-a Mircea BEJAN, Ioana BĂLAN, Barbu BEJAN, Ioan VIDICAN, Ioan Aurel CHERECHEȘ

PERSPECTIVE IMPRESSIVE ENGINEERS – Part I

Over the past 150 years technology has advanced more than ever predicted history of technology. For example, 3D prototyping / printing has become a widely-appreciated and widely used phenomenon. This is a simple and fast manufacturing process, a technique that allows engineers to overcome certain design difficulties in just a few hours, compared to a few weeks that would take traditional methods. Through this technology, engineering sciences, design and technical research are undergoing transformation and the special materials industry will open up a huge fan of possibilities. With 3D technology, an idea goes directly from the design phase to the execution phase, escalating beyond the traditional stages of product manufacturing. The paper systemizes some of the major 3D printing technologies, presenting tabular, focusing on the advantages, disadvantages and application domains of these technologies. And in Romania, the prospect of expanding the home use of 3D printers open to prosumerators (users acting both as producers and consumers). The 3D equipment maker will create the right legal framework for the commercialization of 3D technology only compatible with the processing of non-hazardous materials. The 3D printer user will be granted access to a type of 3D technology limited by software specifically designed by manufacturers for civil use. And so with the advent of this technology, a new chapter in jurisprudence will soon be written in Romania. But until then, Romania is only taking the first steps in this area.

Keywords: 3D prototyping/printing, FDM-Thermoplastic Extrusion Modeling, SLA-Stereolithography, DLP-Digital Light Exposure, SLS-Selective
Laser Sintering, Laser-SLM-Melting, 3DP- Laminated Layer Manufacturing, PolyJet PJP Printing with Photopolymers, 3D Printed House Construction

Cuvinte cheie: prototiparea/printarea 3D, FDM–Modelare prin Extrudare Termoplastică, SLA–Stereolitografie, DLP–Expunerea digitală a luminii, SLS– Sinterizare Laser Selectivă, SLM–Sinterizare (Topire) Laser a Metalelor, 3DP– Printare inkjet tridimensională, LOM–Fabricare Stratificată prin Laminare, PJP– Printare PolyJet cu Fotopolimeri, construcții de case imprimate 3D

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35-54 PERSPECTIVE INGINEREȘTI IMPRESIONANTE Partea a II-a Mircea BEJAN, Ioana BĂLAN, Barbu BEJAN, Ioan VIDICAN, Ioan Aurel CHERECHEȘ

PERSPECTIVE IMPRESSIVE ENGINEERS – Part II

Over the past 150 years technology has advanced more than ever predicted history of technology. For example, 3D prototyping / printing has become a widely-appreciated and widely used phenomenon. This is a simple and fast manufacturing process, a technique that allows engineers to overcome certain design difficulties in just a few hours, compared to a few weeks that would take traditional methods. Through this technology, engineering sciences, design and technical research are undergoing transformation and the special materials industry will open up a huge fan of possibilities. With 3D technology, an idea goes directly from the design phase to the execution phase, escalating beyond the traditional stages of product manufacturing. The paper systemizes some of the major 3D printing technologies, presenting tabular, focusing on the advantages, disadvantages and application domains of these technologies. And in Romania, the prospect of expanding the home use of 3D printers open to prosumerators (users acting both as producers and consumers). The 3D equipment maker will create the right legal framework for the commercialization of 3D technology only compatible with the processing of non-hazardous materials. The 3D printer user will be granted access to a type of 3D technology limited by software specifically designed by manufacturers for civil use. And so with the advent of this technology, a new chapter in jurisprudence will soon be written in Romania. But until then, Romania is only taking the first steps in this area.

Keywords: 3D prototyping/printing, FDM-Thermoplastic Extrusion Modeling, SLA-Stereolithography, DLP-Digital Light Exposure, SLS-Selective
Laser Sintering, Laser-SLM-Melting, 3DP- Laminated Layer Manufacturing, PolyJet PJP Printing with Photopolymers, 3D Printed House Construction

Cuvinte cheie: prototiparea/printarea 3D, FDM–Modelare prin Extrudare Termoplastică, SLA–Stereolitografie, DLP–Expunerea digitală a luminii, SLS– Sinterizare Laser Selectivă, SLM–Sinterizare (Topire) Laser a Metalelor, 3DP– Printare inkjet tridimensională, LOM–Fabricare Stratificată prin Laminare, PJP– Printare PolyJet cu Fotopolimeri, construcții de case imprimate 3D

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35-55 PERSPECTIVE INGINEREȘTI IMPRESIONANTE Partea a III-a

PERSPECTIVE IMPRESSIVE ENGINEERS – Part III

Over the past 150 years technology has advanced more than ever predicted history of technology. For example, 3D prototyping / printing has become a widely-appreciated and widely used phenomenon. This is a simple and fast manufacturing process, a technique that allows engineers to overcome certain design difficulties in just a few hours, compared to a few weeks that would take traditional methods. Through this technology, engineering sciences, design and technical research are undergoing transformation and the special materials industry will open up a huge fan of possibilities. With 3D technology, an idea goes directly from the design phase to the execution phase, escalating beyond the traditional stages of product manufacturing. The paper systemizes some of the major 3D printing technologies, presenting tabular, focusing on the advantages, disadvantages and application domains of these technologies. And in Romania, the prospect of expanding the home use of 3D printers open to prosumerators (users acting both as producers and consumers). The 3D equipment maker will create the right legal framework for the commercialization of 3D technology only compatible with the processing of non-hazardous materials. The 3D printer user will be granted access to a type of 3D technology limited by software specifically designed by manufacturers for civil use. And so with the advent of this technology, a new chapter in jurisprudence will soon be written in Romania. But until then, Romania is only taking the first steps in this area.

Keywords: 3D prototyping/printing, FDM-Thermoplastic Extrusion Modeling, SLA-Stereolithography, DLP-Digital Light Exposure, SLS-Selective
Laser Sintering, Laser-SLM-Melting, 3DP- Laminated Layer Manufacturing, PolyJet PJP Printing with Photopolymers, 3D Printed House Construction

Cuvinte cheie: prototiparea/printarea 3D, FDM–Modelare prin Extrudare Termoplastică, SLA–Stereolitografie, DLP–Expunerea digitală a luminii, SLS– Sinterizare Laser Selectivă, SLM–Sinterizare (Topire) Laser a Metalelor, 3DP– Printare inkjet tridimensională, LOM–Fabricare Stratificată prin Laminare, PJP– Printare PolyJet cu Fotopolimeri, construcții de case imprimate 3D

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35-61 ASPECTE PRIVIND UTILIZAREA ENERGIEI SOLARE Partea I

ASPECTS ON THE USE OF SOLAR ENERGY – Part I

Most human activities, the size, volume and quality of goods and services available to mankind are energy dependent, with energy playing a central role in human existence, being the most important resource. At present, fossil fuel carriers are the fuel of the world economy, and humanity is geared towards using abundant energy at a relatively low price. Alternative sources such as sun, wind, hydropower, wave energy, geothermal energy, bioenergy etc. it is practically not consumed, calling it renewable (alternative or unconventional sources). They produce far fewer emissions, reduce chemical, thermal, and radioactive pollution, and are available theoretically anywhere in the world. The sun is a real blessing, giving us in an hour – enough energy for all people to use it for one year. Every day, about 120,000 terawatts (TW) of electrical power is offered to us by the sun. That, while over a year, the world uses only 15 TW of energy. The paper analyzes some aspects regarding the use of solar energy: collectors, solar power stations, solar houses.

Keywords: solar energy, types of renewable energy, history, heat fluxes, energy radiation, solar collector, nuclear energy Cuvinte cheie: energie solară, tipuri de energii regenerabile, istoric, fluxuri termice, radiaţii energetice, colector solar, energie nucleară

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35-62 ASPECTE PRIVIND UTILIZAREA ENERGIEI SOLARE Partea a II-a

ASPECTS ON THE USE OF SOLAR ENERGY – Part II

Most human activities, the size, volume and quality of goods and services available to mankind are energy dependent, with energy playing a central role in human existence, being the most important resource. At present, fossil fuel carriers are the fuel of the world economy, and humanity is geared towards using abundant energy at a relatively low price. Alternative sources such as sun, wind, hydropower, wave energy, geothermal energy, bioenergy etc. it is practically not consumed, calling it renewable (alternative or unconventional sources). They produce far fewer emissions, reduce chemical, thermal, and radioactive pollution, and are available theoretically anywhere in the world. The sun is a real blessing, giving us in an hour – enough energy for all people to use it for one year. Every day, about 120,000 terawatts (TW) of electrical power is offered to us by the sun. That, while over a year, the world uses only 15 TW of energy. The paper analyzes some aspects regarding the use of solar energy: collectors, solar power stations, solar houses.

Keywords: solar energy, types of renewable energy, history, heat fluxes, energy radiation, solar collector, nuclear energy Cuvinte cheie: energie solară, tipuri de energii regenerabile, istoric, fluxuri termice, radiaţii energetice, colector solar, energie nucleară

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35-63 CONSIDERAȚII ASUPRA ENERGIILOR REGENERABILE – ENERGIA SOLARĂ

CONSIDERATIONS ON RENEWABLE ENERGY – SOLAR ENERGY

This paper briefly describes the main renewable energies on our planet. It also describes the solar energy used for the preparation of hot water and the heating of homes. Last but not least, the transformation of solar energy into electricity required for home appliances in a home such as telephones, lighting, television, etc.

Keywords: solar energy, electricity, hot water, solar panel Cuvinte cheie: energie solară, energie electrică, apă caldă, panou solar

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35-72 UNELE CONSIDERAȚII PRIVIND ACOPERIRILE METALICE ELECTROCHIMICE ȘI CHIMICE

SOME CONSIDERATIONS ON ELECTROCHEMICAL AND CHEMICAL METAL COVERINGS

This paper briefly presents electrochemical and chemical metallic coatings. Coatings of various parts with metallic layers is done especially for: Increasing the corrosion resistance, improving the appearance, increasing the superficial hardness, increasing the resistance to wear. Metallic coatings can be made: electrochemically, thermally, by spraying, chemically, by plating, amalgamation, by conversion, and by vacuum evaporation.

Keywords: metallic coatings, electrochemical coatings, chemical composition, nickel electrolytes, copper electrolytes Cuvinte cheie: acoperiri metalice, acoperiri electrochimice, compoziție chimică, electroliți de nichelare, electroliți de cuprare

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34-5 CONSIDERAȚII ASUPRA CALCULULUI TERMOTEHNIC AL UNEI CLĂDIRI ÎN VEDEREA ELABORĂRII CERTIFICATULUI ENERGETIC Partea a II-a

CONSIDERATIONS ON THERMOTHETICAL CALCULATION
OF A BUILDING FOR ELABORATION – ENERGY CERTIFICATE – II
In this paper some references are made to the thermo-technical calculation of residential buildings and apartments. Calculations also provide information on the total annual specific energy consumption for heating, lighting, hot water, ventilation, whereby the building falls into an energy class, and then measures are taken to improve the thermal energy performance of building.
Keywords: building, apartment, heat, electricity, thermal ventilation
Cuvinte cheie:clădire, apartament, căldură, electricitate, ventilație termică

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34-4 CONSIDERAȚII ASUPRA CALCULULUI TERMOTEHNIC AL UNEI CLĂDIRI ÎN VEDEREA ELABORĂRII CERTIFICATULUI ENERGETIC Partea I-a

CONSIDERATIONS ON THERMOTHETICAL CALCULATION
OF A BUILDING FOR ELABORATION – ENERGY CERTIFICATE – I
In this paper some references are made to the thermo-technical calculation of residential buildings and apartments. Calculations also provide information on the total annual specific energy consumption for heating, lighting, hot water, ventilation, whereby the building falls into an energy class, and then measures are taken to improve the thermal energy performance of building.
Keywords: building, apartment, heat, electricity, thermal ventilation
Cuvinte cheie:clădire, apartament, căldură, electricitate, ventilație termică

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33-4 OCTOMBRIE 2018, 20 DE ANI DE LA ÎNFIINȚAREA ASOCIAȚIEI DE STANDARDIZARE DIN ROMÂNIA – ASRO

OCTOBER 2018, 20 YEARS OF THE ESTABLISHMENT
OF THE ROMANIAN STANDARDIZATION
ASSOCIATION – ASRO
The beginnings of standardization in Romania date from the period preceding the Second World War, the first national standards being adopted in 1937-1938 within the General Association of Engineers of Romania – AGIR. The Military Circle in Bucharest, October 2, 1998. According to Government Ordinance no. 39/1998 (as amended by GO no. 44/27 July 1998), on this date was held the General Assembly for the establishment of the Association of Standardization in Romania – ASRO, a legal entity of private law, with a legal status of a non-lucrative association, on the basis of Law no. 21/1924, the association comprising 106 founding members.
Through this institutional reform in national standardization, alignment with European norms has been achieved, transferring the responsibilities in the field to those who are the main beneficiaries of this activity.
Some aspects of Law no. 163/2015 of 24/06/2015 on national standardization, ASRO affiliation to international and European standardization bodies, composition and organization chart of the association. The stages of achieving a standard are briefly outlined.
Keywords: standardization, short history, Romanian Standardization Association – ASRO, national standardization body, attributions, achievement of a standard
Cuvinte cheie: standardizare, scurt istoric, Asociaţia de Standardizare din România – ASRO, organismul naţional de standardizare, atribuții, realizarea unui standard

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32-63 CONSIDERAȚII ASUPRA TENSIUNILOR ȘI DEFORMAȚIILOR DIN CADRELE PRESELOR DE MARE TONAJ

CONSIDERATIONS ON THE FRAMES STRESSES

AND STRAINS HEAVY PRESSES

 

In paper presents a theoretical study of the state of stress and strain in the machine frame framework heavy press. These frameworks are made up of a plurality of frames each comprised of two closed C-shaped elements (calipers) connected by tightening by means of threaded rods (Fig. 1)

 

Keywords: press, frame, strength, stress, deformations, thrusts

Cuvinte cheie: presă, batiu, forță, tensiuni, deformații, tirant

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31-15 ASPECTE PRIVIND ISTORICUL AUTOMOBILULUI ROMÂNESC – Partea a III-a

ASPECTS OF HISTORY ROMANIAN CAR – part III

 

At the beginning of last century, Romania was one of the richest European countries, among the first 10 countries that have introduced the car since its inception.

It presents the first transport vehicles in Romania dates back to 1895 are represented by two hybrid trucks with steam. „The Karaso” Simplon exotic convertible is a car made in Resita, in the style roadsters from the 50s. Vintage cars are not just cars, they can be considered on its own history on wheels, ideal combination for nostalgic times in which power was aesthetics, elegance and refinement. The oldest car in the west is a nice Ford Model A, 1928. The tradition left by the big names in automotive construction must be respected, promoting the work of some young Romanian students from technical universities and their achievements: University „Ovidius” in Constanta, Technical University „Gh. Asachi” University and University of Pitesti.

 

Keywords: car, inventions, „The Karaso” Simplon, vintage cars, technical achievements student

Cuvinte cheie: automobil, invenții, ”De Karaso” Simplon, mașini de epocă, realizări tehnice studențești

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29-13 MĂRIREA ȘI DECĂDEREA UNEI MARI ÎNTREPRINDERI DE REPARAT MATERIAL RULANT DIN CLUJ-NAPOCA

A LARGE RISE AND FALL FIXED FOR THE ROLLING
STOCK CLUJ-NAPOCA
In this paper are presented phases it went through a major
undertaking repair of rolling stock over time from 1870 to 2016 (period of 146
years).
Keywords: locomotive, wagon train, repair, transport
Cuvinte-cheie: locomotivă, vagon de tren, reparații, transport

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27-71 CONSIDERAȚII ȘI CALCULE ASUPRA CAZANELOR LOCOMOTIVELOR CU ABUR Partea a II-a

CONSIDERATIONS AND CALCULATIONS ON BOILERS OF STEAM LOCOMOTIVES. PART II

Part II of the paper presents a brief history of rail transport, exposure of the first steam locomotive that circulated in our country and characteristics. In Part II of the paper presents a study and proposals for repair of the boiler of the locomotive. It analyzes the phenomena occurring inside the boiler during operation. The purpose of repairing steam locomotives is to be played recreational circuits in different geographical areas.

Keywords: steam locomotive, boiler, rail, recreation

Cuvinte cheie: locomotivă cu abur, cazan, transport feroviar, agrement

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27-70 CONSIDERAȚII ȘI CALCULE ASUPRA CAZANELOR LOCOMOTIVELOR CU ABUR Partea I-a

CONSIDERATIONS AND CALCULATIONS ON BOILERS OF STEAM LOCOMOTIVES PART I

Part I of the paper presents a brief history of rail transport, exposure of the first steam locomotive that circulated in our country and characteristics. In Part II of the paper presents a study and proposals for repair of the boiler of the locomotive. It analyzes the phenomena occurring inside the boiler during operation. The purpose of repairing steam locomotives is to be played recreational circuits in different geographical areas. Keywords: steam locomotive, boiler, rail, recreation Cuvinte cheie: locomotivă cu abur, cazan, transport feroviar, agrement

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27-19 CHINA – LA SUPERLATIV Partea a II-a

CHINA – AT ITS BEST – Part II
One of the contestants feared you 21st century economic market (because here are the biggest fights) is China. Among the most recent achievements of the Government in Beijing is „the three Gorges Dam” on the Yangtze River-6380 km-the third longest in the world, after the Amazon and the Nile. China’s model of economic progress transmits a significant lesson to all avid States economic charts, because progress has a price, a price so high that it cannot estimate the figures. Located in the Chinese capital, Beijing, Tian An Men Square is the biggest market in the world. Its shape is rectangular, measuring an area of 44 hectares, mainly its name and the gate that leads to the Forbidden City. China has become the second world economy taking the place of Japan in 2010, after its gross domestic Product (GDP) has exceeded that of the archipelago home islands throughout the year, according to figures announced by the Japanese Government. And the superlatives continue: high-speed rail network, the longest tunnels, skyscrapers, many other daring projects, etc., etc.
Keywords: Chinese superlatives, population, pollution, high speed trains, international trade, export, supercomputers, hydropower, navigable channels, art, skyscraper etc.
Cuvinte cheie: superlative chineze, populație, poluare, trenuri de mare viteză, comerț internațional, export, supercomputere, hidroenergie, artă, canale navigabile, zgârie-nori etc.

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26-61 RECONDIȚIONAREA PRIN FRETARE A ARBORILOR COTIȚI, DE LA LOCOMOTIVELE DIESEL

CRANKSHAFT REBUILDING FROM DIESEL FRETTING
This paper presents a method ethnological crankshaft repair of diesel locomotives fitted to power between 450 and 1250 HP. Repair of crankshaft technology apply to broken trees. The method applied is achieved by assembling Fretting two shaft ends broken.
Keywords: tree, relieving, sandifer, diesel overhaul

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25-72 CONSIDERAȚII ASUPRA AMORTIZĂRII IMPACTULUI UNUI VEHICUL CU UN OBSTACOL RIGID Partea a II-a

REFLECTIONS ON A VEHICLE WITH AN IMPACT
DEPRECIATION RIGID OBSTACLE – Part II
Make a selection of work items and the factors that lead to unexpected
event called „traffic accident”. Are the concept of „safety” and the possibility of
its optimization. The paper is presented a solution to reduce the negative
effects that occur in the event of a frontal impact of vehicle with a fixed obstacle
through equipping its bumper with shock absorbers magneto rheological.
Keywords: bumpers, crash, car, traffic, obstruction, safety, obstacle
Cuvinte cheie: amortizor, accident, automobil, obstacol, siguranța,
circulație
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25-71 CONSIDERAȚII ASUPRA AMORTIZĂRII IMPACTULUI UNUI VEHICUL CU UN OBSTACOL RIGID Partea I-a

REFLECTIONS ON A VEHICLE WITH AN IMPACT
DEPRECIATION RIGID OBSTACLE – Part I
Make a selection of work items and the factors that lead to unexpected
event called „traffic accident”. Are the concept of „safety” and the possibility of
its optimization? The paper is presented a solution to reduce the negative
effects that occur in the event of a frontal impact of vehicle with a fixed obstacle
through equipping its bumper with shock absorbers magneto rheological.
Keywords: bumpers, crash, car, traffic, obstruction, safety, obstacle
Cuvinte cheie: amortizor, accident, automobil, obstacol, siguranța,
circulație
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20-65 INSTALAȚIE DE FABRICAT ARCURI ELICOIDALE PENTRU VEHICULE FEROVIARE

INSTALLATION FOR RAIL VEHICLES
MANUFACTURED HELICAL SPRINGS
The paper presents the operating principle for a plant to manufacture
spring steel coil springs and also some medium thickness calculations for the
main parts of the plant design
Keywords: spring, plant, rolling stock, elastic element
Cuvinte cheie: arc, instalaţie, material rulant, element elastic

65 INSTALAȚIE DE FABRICAT ARCURI ELICOIDALE


23-63 CONSIDERAȚII ASUPRA VIBRAȚIILOR DIN SUSPENSIA VEHICULELOR FEROVIARE ȘI MĂSURAREA LOR

REFLECTIONS ON RAILWAY
VIBRATION VEHICLE SUSPENSIONS
Making a simple mechanical model railway vehicle must contain
masses suspended bogie and vehicle weight box connected by elastic and
dynamic elements. Thus, the suspension of railway vehicles consists of elastic
elements, connecting elements, and shock. Vibration measurements of elastic
element (or set of elastic elements) of a railway vehicle suspension requires a
stand to simulate operating conditions. This paper presents such a stand which
operates as a vibrator.
Cuvinte cheie: model mecanic, vibrații, suspensiile vehiculelor
feroviare, stand de simulare și măsurare, vibrator
Keywords: mechanical design, vibrations, suspension rail vehicle
simulation and measurement stand, vibrating

23-63 CONSIDERAȚII ASUPRA VIBRAȚIILOR DIN


23-64 CONSIDERAȚII DESPRE AMORTIZOARELE MAGNETOREOLOGICE LA VEHICULELE FROVIARE

MAGNETORHEOLOGICAL DAMPERS CONSIDERATIONS
RAILWAY VEHICLES
This paper presents with a new type of hydraulic damper cylinder in
which fluid is a special fluid called magneto rheological fluid. If this liquid is in a
magnetic field when it changes its rheological properties of.
The magnetic field is stronger with the increasing liquid viscosity.
Cuvinte cheie: lichid, amortizor, câmp magnetic, vâscozitate
Keywords: liquid, damper, magnetic field, viscozity

23-64 CONSIDERAȚII DESPRE AMORTIZOARELE MAGNETOREOLOGICE LA VEHICULELE FROVIARE


24-19 CONSIDERAȚII ASUPRA GEOMETRIEI SUPAPELOR DE LA MOTOARELE CU ARDERE INTERNĂ CU PISTOANE

REFLECTIONS ON THE GEOMETRY VALVE PISTON INTERNAL
COMBUSTION ENGINES
This paper deals with the need to amend the exhaust valve geometry
from internal combustion piston engines.
Cuvinte cheie: supapă, temperatură, gaze de ardere
Keywords: valve, temperature, flue gas

19 CONSIDERAȚII ASUPRA GEOMETRIEI


21-88 CONSIDERAȚII ASUPRA VIBRAȚIILOR SUSPENSIILOR VEHICULELOR DE CALE FERATĂ Partea a II-a

REFLECTIONS ON RAILWAY
VIBRATION VEHICLE SUSPENSIONS – II
Making a simple mechanical model railway vehicle must contain
masses suspended bogie and vehicle weight box connected by elastic and
dynamic elements. Thus, the suspension of railway vehicles consists of elastic
elements, connecting elements, and shock. Vibration measurements of elastic
element (or set of elastic elements) of a railway vehicle suspension requires a
stand to simulate operating conditions. This paper presents such a stand which
operates as a vibrator.
Cuvinte cheie: model mecanic, vibrații, suspensiile vehiculelor
feroviare, stand de simulare și măsurare, vibrator
Keywords: mechanical design, vibrations, suspension rail vehicle
simulation and measurement stand, vibrating

88 CONSIDERAȚII ASUPRA VIBRAȚIILOR


21-87 CONSIDERAȚII ASUPRA VIBRAȚIILOR SUSPENSIILOR VEHICULELOR DE CALE FERATĂ Partea I

REFLECTIONS ON RAILWAY
VIBRATION VEHICLE SUSPENSIONS – I
Making a simple mechanical model railway vehicle must contain
masses suspended bogie and vehicle weight box connected by elastic and
dynamic elements. Thus, the suspension of railway vehicles consists of elastic
elements, connecting elements, and shock. Vibration measurements of elastic
element (or set of elastic elements) of a railway vehicle suspension requires a
stand to simulate operating conditions. This paper presents such a stand which
operates as a vibrator.
Cuvinte cheie: model mecanic, vibrații, suspensiile vehiculelor
feroviare, stand de simulare și măsurare, vibrator
Keywords: mechanical design, vibrations, suspension rail vehicle
simulation and measurement stand, vibrating

87 CONSIDERAȚII ASUPRA VIBRAȚIILOR


22-63 CONSIDERAȚII PRIVIND UZURA SUPAPELOR DE LA MOTOARELE CU ARDERE INTERNĂ

This paper summarizes some aspects of wear parts distribution goes
into internal combustion in four stroke engines. One of the most important
pieces is referred to the intake and exhaust valves of the engine.

Cuvinte cheie: supapă, motor, distribuție, uzură, arc taler, gaze
Keywords: valve, motor, distribution, wear plate spring, gas

63 CONSIDERAȚII PRIVIND UZURA SUPAPELOR